.portfolio-grid {
  column-width: 200px; /* largeur "idéale" d'une colonne */
  column-gap: 1rem;
  padding: 2rem;
  margin: auto;
}

.portfolio-item {
  display: inline-block; /* important pour column layout */
  width: 100%;
  margin-bottom: 1rem;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
  position: relative;
  background: #1a1a1a;
}

.portfolio-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: all 0.3s ease;
}

.portfolio-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.6);
  color: #e0d7ff;
  padding: 0.5rem;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.portfolio-item:hover img {
  filter: brightness(50%);
}

.portfolio-item:hover .portfolio-title {
  opacity: 1;
}

.portfolio-toolbar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem 1.25rem;
  flex-wrap: wrap;
}

.portfolio-toolbar label {
  font-weight: 600;
}

.portfolio-toolbar select {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid #ccc;
  background: #fff;
}

.portfolio-empty {
  padding: 2rem;
  text-align: center;
  color: #666;
}

.project-chip {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
}